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Protection of Enzymes Against Heat Inactivation by Enzyme-Polymer Conjugates.
Macromol Rapid Commun
January 2025
State Key Lab of Polymer Materials Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
Along with the quick advancements in enzyme technology, inactivation has emerged as the key barrier for enzymes to be fully utilized as biocatalysts. Here, a novel strategy is presented for the preservation of the enzymatic activity even after heat treatment by grafting enzymes onto the thermal responsive block copolymer via an activated ester-amine reaction. A new water-soluble activated ester monomer, acrylic polyethylene glycol (PEG) functionalized 3-fluoro-4-hydroxybenzoate is synthesized.
View Article and Find Full Text PDFFactors Regulating the Potential for Freshwater Mineral Soil Wetlands to Function as Natural Climate Solutions.
Wetlands (Wilmington)
January 2025
Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON Canada.
There are increasing global efforts and initiatives aiming to tackle climate change and mitigate its impacts via natural climate solutions (NCS). Wetlands have been considered effective NCS given their capacity to sequester and retain atmospheric carbon dioxide (CO) while also providing a myriad of other ecosystem functions that can assist in mitigating the impacts of climate change. However, wetlands have a dual impact on climate, influencing the atmospheric concentrations of both CO and methane (CH).
View Article and Find Full Text PDFBiobased vitrimers: towards sustainability and circularity.
Chem Commun (Camb)
January 2025
Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy.
In polymer science and technology, the distinction between thermoplastic and thermosetting materials has always been sharp, clear, and well-documented: indeed, the former can theoretically be reprocessed a potentially infinite number of times by heating, forming, and subsequent cooling. This cannot be done in the case of thermosetting polymers due to the presence of cross-links that covalently bind the macromolecular chains, giving rise to insoluble and infusible polymeric networks. In 2011, the discovery of vitrimers revolutionized the classification mentioned above, demonstrating the possibility of using new materials that consist of covalent adaptable networks (CANs): this way, they can change their topology through thermally-activated bond-exchange reactions.
View Article and Find Full Text PDFCold exposure and thermoneutrality similarly reduce supraclavicular brown adipose tissue fat fraction in fasted young lean adults.
FASEB J
January 2025
Department of Radiology, C.J. Gorter MRI Center, Leiden University Medical Center, Leiden, The Netherlands.
Brown adipose tissue (BAT) is a metabolically highly active tissue that dissipates energy stored within its intracellular triglyceride droplets as heat. Others have previously utilized MRI to show that the fat fraction of human supraclavicular BAT (scBAT) decreases upon cold exposure, compared with baseline (i.e.
View Article and Find Full Text PDFSustainability in Construction: Geopolymerized Coating Bricks Made with Ceramic Waste.
Materials (Basel)
December 2024
Department of Architectural Construction and Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
Brick is a common construction material but often ends up as waste due to suboptimal quality. In Ecuador, artisanal brick production results in inconsistent properties for construction. This research aims to repurpose discarded bricks through geopolymerization to create a sustainable building material.
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